Vaporizer



Patented June 16, 1931 i i UNITED STATES PATENT .OFFICE IRVING E. ASKE, OF MINNEAPOL IS, MINNESOTA VAPORIZER Application filed January 24, 1930. Serial No. 423,130.

My invention relates to Vaporizers and by ears 1", secured to the air intake horn, has for its object the improvement of electric or intake manifold of an internal explosion Vaporizers for converting hydrocarbon fuel engine, or other fuel conductor (not shown) into hot fumes for use in starting a cold which it may serve, and to discharge there- 6 internal engine, and for such other or furinto. Said cup is closed at the bottom by 50 ther uses as it may be adapted to serve. It a plug 2, through which extends a binding consists of the structures, combinations, and post 8 electrically insulated from said plug arrangements of parts hereinafter described in any suitable manner, or by any suitable and claimed. means, as by intervening washers 3, of in- 10 In the drawings, Fig. 1, is an enlarged sulatin material. Electrically connected at 55 central vertical section of a vaporizer emone end to the head of said post within a bodying my said invention omitting the recess 2 in said plug, are resistance memhereinafter described screen. Fig.2 is a bers 4 and 5 which at their opposite ends horizontal section of the same approximately are grounded on said cup in any suitable 16 on the line A B of Fig. 1. Fig. 3, is a manner and by any suitable means. 30 vertical section of the same invention ap- Extending into the recess in said plug is proximately on the line (1-D of Fig. 2 a cylindrical heat insulating sheath 6 of any omitting the hereinafter described pads and suitable heat insulating material as mica, showing said screen. and a concentric cylindrical protective shell v20 My present invention is designed to be an 7, preferably of metal. I

improvement upon the structure disclosed At each side of each of the resistance memin my Patent Number 1,758,020, in which bers is a very thin absorbent member or prior structure are embodied a plurality pad as 8, 9, 10, 11, respectively, each prefof absorbent pads, some of which, correerably about one thirty second of an inch sponding substantially to the hereinafter dethick and extending. across the bore of said 70 scribed pads 8, 9, 10 and 11, are in said prior cylindrical heat insulating sheath 6, which structure positioned in contact with certain surrounds, and is preferably spaced from resistance members corresponding to the said resistance members. hereinafter described resistance members 4 Between the central pair of said thin pads and 5, in which positions, although servicewhich may also be referred to as the central 75 able, the contacting pads tend, under prointermediate ads, are a pair of comparalonged use at very high temperature, to tively thick absorbent central pads, 12 and char, and to clog the fuel conducting wells 13, positioned oppositely to and parallel and vapor exhaust passages with charred with each other in a plane parallel to the side material. To avoid these imperfections in faces of said central intermediate pads and 30 said prior structure is one purpose of my spaced from each other preferably about present invention; but I donot mean that one-eighth of an inch more or less, to form my present invention is restricted'to. the ima well 14, in which fuel oil may rise or fall provement of the specificstructure disclosed freely. Said central pads extend in oppo- 4.0 in said prior'structure since my present insite directions from said well to the walls of a5 vention may be adapted to use with and may said heat insulating cylinder. Each of said extend to other forms of'vaporizers. central and central intermediate pads ex- In the drawings, 1 is a vaporizer cup of tends from the top of the head of said bindany suitable form or construction adapted to ing post approximately to the upper ends be cast upon or by any suitable means, as of said resistance members. 90

The outward pair of said thin pads 11'! ay be called the outer intermediate pads and they preferably extend. from the top of the head of said post approximately to the upper ends of said resistance members.

Against the outward side face of each of the outward intermediate pads, I position a relatively thick pad, as 15 and 1G, respectively, which may be referred to as the outward pads. Said outward pads preferably extend from the bottom of said recess in said plug, approximately to the upper ends of said resistanc members, and extend transversely from the respectively adjoining outer intermediate pads to the wall of said sheath, and extend parallel with said outer intermediate pads, from the wall in one quadrant of said sheath to the wall of an adjoining quadrant thereof.

Advantage is preferably taken, however, of the curve of said sheath to provide vertical spaces or wells, as in 17 and 18, between said sheath and the central parts of the relatively flat outer faces of each of said outer pads, respectively, wherein fuel oil may flow, and to form other oil spaces or corner wells, as 19, 20, 21 and 22 between the inward edges of said outward pads and the respectively adjoining walls of said sheath and the respectively adjoining outer intermediate pads.

Each of 1 said outward pads also has formed in its inward face a vertical groove cooperating: with the side of the respectively adjoining outer intermediate pad to form intermediate wells, 23 and 24, respectively, in which fuel oil may freely rise or fall.

Said sheath has any suitable number and form of intake ports, as 25, formed therein near its lower end adapted to register with corresponding intake ports 26 in said shell. Said intake ports in said sheath are preferably in the form of wide and highly slotted apertures, thereby permitting the registration with the ports in said shell to be more easily and cheaply effected during assembly.

Said. sheath extends from a horizontal plane a short distance within the recess in said plug, to a horizontal plane slightly above the upper bends of said resistance members, and said shell. extends approximately from the horizontal plane of the bottom of said sheath to a place a short distance above the upper end of said. sheath.

Between the upper end of said sheath and the upper end of said shell is positioned a horizontal screei'i 2''? preferably of porcelain, which is held in position by an inwardly directed annular flange formed on the upper end of said shell. Said shell is spaced from said cup and said cup has a fuel intake port formed therein at any suitable point as at 1 adapted to communicate with any suitable external source of supply and with the space between said cup and said shell. The fuel oil. will then enter said cup and flow through said shell and insulatinpcylinder ports, positioned 1 referably opposite the wells 17 and 18, and thence into the recess ii said. plug and may rise in the outer wells and flow over the top of the pads and down into one or more of the several other wells, at the same time soaking through the pads by capillary attraction or under hydrostatic pressure or both, and may flo across the head of said post, through a s.ot 3 therein, from the intermediate to the central well. During the'heating period liquid fuel may percolate in said wells and more promptly and ell'ectively supply oil to all the levels of said pads than could be done by capillary attraction from the bottom alone through the thick pads.

Inter-posed between each of said intermediate pads and the respectively nearest of said resistance members, is a thin leaf or film of mica as 28, 29, E and 31, respectively, adapted to contact at one side with the intermediate pad and at the other side with the resistance member and to prevent contact between. the intermediate absorbent pad and the resistance members and thus prevent scorching or char-ring of the absorbent pad. Said mica leaves serve to distribute the heat more evenly to the intcru'iedia'te pads and are thin enough to permit sullicient heat to reach the intermediate pads to vaporite the hydrocarbon fuel distributed in them. Further, said mica leaves opcrate to form guides to the top of the vaporizer along which the vapor may flow to the cxnaust ports in a manner similar to the manner in which such vapor formerly followed the wire of said resistance members to their upper bends.

If desired transverse apertures communicating with the outer, intermediate and central wells may be formed in said pads. But such structure would tend to make the assembling operation more di'llicult and expensive. The pads are held firmly together by the insulating sheath which is pressed over them and fits closely, and they are made of any suitable porous and incombustible material, preferably asbestos.

W hat I claim is- 1.. The combination of a cup open at one end and closed at the opposite end and pro vidcd with an intake port, an electricity conducting post extending,- into said cup through its closed end and insulated therefrom, a. pair of non-absorbent refractory leaves extei'iding into said cup, an electric r ..'stance member electrically connected at one end to the inward said post and grounded at its opposite end and exterirlinp, inter mediate of its ends between said leaves and in contact with the inward faces thereof,

spaced for a part of its length from the side wall of said cup, and provided with an intake port adapted to communicate with the intake port of said sheath and with the space between said shell and the side wall of said cup.

2. The combination of a cup, a pair of non-absorbent refractory leaves extending into said cup, an electric resistance member extending into said cup between said leaves and in contact with the inward faces of said leaves, a sheath of heat insulating material encircling said leaves and resistance cup, leaves of non-absorbent refractory material positioned at the opposite sides of said member, absorbent material positioned at the opposite sides of said leaves from said resistance member, and means for retaining said absorbent material in position and for retarding the radiation of heat therefrom, said means being provided with an intake port and an exhaust port.

In testimony whereof, I hereunto afiix my signature.

IRVING E. ASKE.

member and provided with an intake port,

absorbent members positioned between the sides of said leaves and sheath, and a shell encircling said sheath and spaced for a part of its length from the side wall of said cup and provided with an intake port adapted to communicate with said space and with the intake port in said sheath.

3. The combination of a cup, two pairs of non-absorbent refractory leaves extending into said cup, electric resistance members extending between the leaves of each of said pairs, respectively, said pairs being spaced from each other, absorbent material positioned in the space between said pairs, a heat insulating sheath encircling said pairs and resistance members and provided with an intake port, absorbent material interposed between the outer sides of said pairs and said sheath, said absorbent material between said pairs and outwardly thereof having wells formed therein, other 7 wells being formed between the side wall of said sheath and portions of said absorbent material, and a shell encircling said sheath and spaced for a part of its length from the side wall of said cup, said shell having an intake port formed therein adapted to communicate with the intake port in sheath and with the space between said shell and side wall of said cup, said vaporizer being adapted to discharge heated vapor from the upper level of the area encircled by said sheath.

4. In a vaporizer, the combination of a cup, an electric resistance member extending into said cup, leaves of non-absorbent non-conducting refractory material at opposite sides of said member, and absorbent material positioned at the opposite sides of said leaves from said resistance member said absorbent material being'in contact with said leaves.

5. In a vaporizer, the combination of a cup provided with an intake port, an electric resistance member extending into said 

